Convenient-to-install plastic air filter for diesel engine

The utility model discloses a convenient-to-install plastic air filter for a diesel engine, particularly relates to the technical field of air filters, and aims to solve the problems that most plastic air filters on current diesel engines are fixed by screws and diesel engine connecting plates, but the screws are inconvenient to fix, so that a user cannot operate the plastic air filters conveniently. The air filter assembly comprises an air filter assembly and a connecting plate, the connecting plate is provided with a mounting mechanism matched with the air filter assembly for use, the air filter assembly comprises a bottom shell and an outer shell, the bottom shell is detachably connected with the outer shell, and the bottom shell is detachably connected with the outer shell. According to the air filter assembly, under the coordination effect of the spring, the rotating rod and the pull rod and the coordination effect of the inserting column and the inserting hole, convenience is provided for convenient con